Timken National Oil Seal 40370S

Description:

The Timken National 40370S oil seal is a nitrile radial shaft oil seal used in industrial rotating equipment to retain lubricant and prevent contaminants from entering bearing assemblies. Commonly installed in electric motors, gearboxes, pumps, conveyors, agricultural machinery, and general industrial equipment with rotating shafts. Maintenance teams, OEMs, and system integrators use this oil seal for preventive maintenance, equipment repair, and seal replacement to minimize lubricant leakage and extend bearing service life.

Applications:

The Timken National 40370S oil seal is designed for general-purpose industrial sealing applications requiring reliable lubricant retention and contaminant exclusion. It is widely used in electric motors, industrial gearboxes, pumps, conveyors, compressors, agricultural equipment, and other rotating machinery where dependable shaft sealing helps improve equipment reliability and reduce maintenance downtime.

Technical Specifications:

• Manufacturer Part Number (MPN): 40370S
• Manufacturer: Timken National
• Product Type: Radial shaft oil seal
• Seal Type: 4S
• Material: Nitrile (NBR)
• Lip Type: Single lip without spring
• Design: Solid
• Shaft Diameter: 1.968 in (49.987 mm)
• Outside Diameter: 2.964 in (75.286 mm)
• Housing Bore: 2.960 in (75.184 mm)
• Overall Width: 0.250 in (6.35 mm)
• Maximum Shaft Surface Speed: 2,000 ft/min
• Operating Temperature Range: -40°F to 225°F (-40°C to 107°C)
• Typical Application: General-purpose industrial shaft sealing

Common Replacements:

• SKF 40370S
• CR 40370S
• National 40370S